Patents by Inventor Clifton H. Lauderdale

Clifton H. Lauderdale has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of producing glyoxylated hydroxypropyl guar and liquid plant treatment composition containing same
    Patent number: 5104436
    Abstract: A liquid fertilizer composition having a substantial ability to retard leaching of constituent plant nutrients is prepared by dispersing glyoxylated hydroxypropyl guar in an aqueous mixture containing a fertilizer chemical in a preferred concentration of 0.4-1.5% by weight. Similarly, a liquid herbicide, fungicide, insecticide, fire retardant or other liquid plant treatment composition having the ability to adhere to applied surfaces to resist washing is prepared by dispersing glyoxylated hydroxypropyl guar in an aqueous mixture of such a plant treatment chemical in a corresponding concentration. A method is disclosed for producing glyoxylated hydroxypropyl guar by reacting guar gum with propylene oxide and the reaction product thereof with glyoxal in the absence of alcohol or any solvent.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: April 14, 1992
    Assignees: Colloids, Inc., Clifton H. Lauderdale
    Inventors: Clifton H. Lauderdale, Vinai K. Srivastava, Walter H. Carter
  • Underhood tool and storage compartment
    Patent number: 4136904
    Abstract: A tool and storage compartment adapted to be affixed under the hood of vehicles to the internal surface of the fender wheel cover includes an elongated body and a hinged cover thereon with illumination means disposed thereon activated when opened. The body is provided with an electrical receptacle coupled to the vehicle battery for use with external appliances.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: January 30, 1979
    Inventor: Clifton H. Lauderdale